Demountable him



H. GU'THRIE.

DEMOUNTABLE RIM.

APPLICATION FILED AUG-26.1918.

Patented Feb. 0,1920

QZ/wwwa@ I-IARRIE GUTI-IRIE, OF CHICAGO, ILLINOIS.

DEMOUNTABLE RIM.

S-peccation of Letters Patent.

Patented Feb. 10, 1920.

Application filed August 26, 1918. Serial No. 251,371.

To all whom z't may concern:

Be it known that I, HARRIE GUTHRIE, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Demountable Rims, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to demountable rims for automobile wheels and has to do more particularly with means for fastening the rim on the wheel proper. One of the principal features of my invention is the use of a single operating element which is adapted to unlock the rim from the wheel so that it may be readily removed. In the ordinary wheel now in general use of the kind described herein, a number of bolts must be operated before the rim may be secured to or removed from the wheel. In my invention I provide locking mechanism in the form of a circumferentially movable locking key which is adapted to interlock with cooperating locking lugs on the rim so as to hold the rim on the wheel.

For better understanding of my invention reference is to be had to the accompanying drawing in which- Figure 1 is a side elevation of an automobile wheel showing my invention applied thereto, part of the wheel being shown in section so as to disclose the locking device;

Fig. 2 is a view of a section of the felly of the wheel showing the guide for receiving the locking lug and the circumferentially movable locking bolt;

Fig. 3 is a perspective view of a portion of the rim showing the locking lug;

Fig. 4 is a section through the rim and felly of the wheel showing the locking parts; and

Fig. 5 is a side view of a-portion of the felly showing the locking key operating devlce. Y

Referring now more in detail to the preferred form of my invention it comprises a rim 6 of any standard make and carrying a T-shaped locking lug 7 adapted to enter a lateral slot 8 in a guide block 9 which is set into the felly of the wheel and suitably se cured thereto preferably bv means of bolts 10. The recess S and cooperating portion 7 are of such shape that the lug and rim are held against outward movement, this being secured preferably by means of a notched construction 7 2 as shown more clearly in Figs. 1, 3, and 1. The slot 8 is preferably closed at 8 and the head of the vT-shaped lug 7 is adapted to lit into the enlarged recess 82, this end construction being adapted to exclude dirt from the cooperating elements 7 and 8. In order that the rim may be more readily placed upon the wheel and removed therefrom I preferably round the end 73 of the lug 7 as shown in Fig. 3.

Up to this point I have referred simply to the construction of one of the cooperating locking elements but as indicated in Fig. 1 a plurality of such locking devices may be provided, two of them being shown in this figure. As will be apparent the rim may be slid on and off the wheel, the locking lug 7 cooperating with the lateral slot in the guide block 9.

Now in order to lock the rim on the wheel against lateral displacement I provide a locking bolt preferably in the form of a circumferentially movable rod 11 which carries a rack 12 cooperating with a pinion 13 suitably iournaled in the felly of the wheel and having a socketed end 13 (Fig. 5) adapted to receive a key for rotating the pinion. A suitable cover plate 14 is attached to the side of the felly for excluding dirt and water from the pinion.

The locking bolt 11 extends through holes 1li in the guides 9 as will be apparent from Fig. 1, said bolt 11 being recessed at 15 for each looking 'lug 7 so that when the bolt is withdrawn and the recesses 15 register with the slots 8, the rim may be slid olf of the wheel. In order to secure a more positive lock by means of the bolt I preferably have the bolt slightly tapered so as to wedge in the openings 14C of the guide blocks 9 and the recess 74 in the locking lug. Thus as the bolt is forced into locking position it is held by the wedging thereof against the sides of the slots in the guide block and locking lug.

If desired any number of such circumferentially disposed locking devices may be employed but I preferably apply them simply on one side of the wheel and provide Xed cooperating lugs and recesses on the opposite side of the wheel as shown at 16. For this purpose I preferably secure a fixed lug to the rim and a fixed cooperating recess to the felly of the wheel, the parts thus engaging to hold the rim in place. In placing the rim on the wheel the fixed locking elements .theretore I do not desireto be limited to the eXact structure shown and ydescribed but aim to cover all that which comes Within the spirit and scope ot the appended claims.

I claim: l1. A demountable rim tor automobiles g comprising a rim having circumterentially recessed lugs, guides tor the wheel each hav-"- mg a lateral slot to receive ay lug, a circum terentially movable locking boltl extending along vonly a portion ot the circumference ot the Wheel tor'engagement With the lug rel lcesses to hold one side ot the rim on the Wheel, 'and a fixed cooperating lugl and re- Y, cess opposite'said first said lugs to hold the 25,

other side ot the rim on'the wheel.

2. 'A demountable rim mechanism ot thev ,character described comprising a telly, a

" A guide block set into the telly, a recess in theA block having one endv closed, aV circumterential groove in the telly extending across the` Y rblock and recess, a boltextending along only a `portion ot the circumference ot the VWheel slidable in the groove, a rack on the bolt, a

" pinion mounted in the telly and adapted to move thebolt longitudinally in the groove,

a rim, a lug on the rim adapted to engage said recess with a locking fit and having a head to close the other end ot the recess, a groove in the lug adapted to aline With the irst named groove When the rim is placed in the telly and be engaged by said bolt, a recess in the telly diametrically opposite the first recess, and a Xed lug on the rim tor engaging said second recess.

3. A demountable rim mechanism ot the character described comprising a telly, a dovetail recess in the telly, a bolt movable circumterentially in the telly across the recess, a rim, a dovetail lug on the rim engaging the recess with a llocking lit and a groove in said lug adapted to bel engaged by said bolt, a recess in the telly diametrically oppoysite the irst recess and a iixed lug on the rim tor engaging said second recess.

4:. A demountable rim mechanism ot the ing therecess with a locking fit, a groove in `said lug adapted to be engaged by said bolt,

lsaid bolt being tapered so as to Wedge in the groove ot said lug, and a recess in the telly diametrically opposite the lirst recess and a fixed lug on the rnn tor engaging said second TSCGSS.

In Witness whereof, I hereunto subscribe my name this 23rd day ot August, A. D.,

HARRIE GUTI-IRIE. 

